Stop motion device for ring spinning frames



Nov. 18, 1952 J, E, SUMNER 2,618,115

STOP MOTION DEvIcEFoR RING SPINNING FRAMES Fil'ed sept.I 18, 1951 '2- SHEETS-SHEET 1 +I- .Z0 zz y z5' 2 ze .z4 I I Iz?l Y IIIII ,L- l In" ,n G .18 7 I f I- Q 4 a fzlq.

5 za f I l' l l H I O| I I vI I l 0| l l l l L INVENTOR.l JAMES 5. salu/v51? BY Nov. 18, 1952 J. E. sUMNER lSTOP MOTION DEVICE FOR RING SPINNING FRAMES Filed Sept. 18, 1951 2 1SHEETS-SHEET 2 4 TTOR/VEYJ Patented Nov. 18, 1952 UNITED STATES PATENT OFFICE STOP MOTION DEVICE FOR RING 'SPINNING FRAMES 'J ames E. Sumner, Fries, Va.

.Application September 18, 1951, Serial No. 247,174

Claims. .l

This invention relates .to .a stop motion device .for spinning frames Vhaving a vertically reciprocating ring rail actuated for so-called i'illing or combination builds, and more particularly to an improved means for stopping the ring rail automatically when the bobbins are full and when the ring rail reaches a predetermined point on its downward traverse.

A stop motion device .arranged according to the present invention has the important advantage of simplified construction as compared with stop motion devices proposed heretofore for use with spinning frames, which advantage provides muchmore dependable service and results in substantial economy both in its initial installation .and in maintenance and replacement costs.

Briefly described, the stop motion device of the present invention comprises an elongated arm having a magnet disposed on one end and a mercury -bulb switch on the other end, with the switch being connected in circuit with the coil lof a magnetic switch of the motor of the frame, the Aelongated arm being pivotally arranged on the body structure of the frame so that the magnet will contact the ring rail when the bobbins are full, yand the elongated arm will be pivoted or tilted by the downward traverse of the .ring rail whereby the circuit will be broken and the magnetic switch will be actuated to stop the motor of the spinning frame, with the ring rail stopping at a predetermined point on its downward traverse, and an adjustable set screw is provided for separating the magnet from the ring rail so `that the elongated arm will return to its original position and the circuit will be restored.

A problem .constantly facing the operator of the ring spinning frame is .how the frame can be doffed following the building of the bobbins withont breaking any of the threads. It is known that a great inumber of threads will be broken .if the ring rail stops at its highest point of traverse, and .-it is thus highly desirable that `t-hefring rail be stopped at a point at least `an tinch down from its .highest point of traverse following athe building .of the bobbins. The present invention `is designed to stop the ring rail at this desirable point, namely, an inch down from the pointof its highest traverse, so that the ring .rail can .be run to the bottom of the bobbins without breaking the threads and then the frame domed. Such positive controlA `with the .simple device of :the present invention constitutes .a idistinct improvement v:over `complicated prior art mechanisms.

parts being indicated to .illustrate .a stop motion device arranged fon vthe frame in accordance with Vthe present invention;

Figure 2 is an enlarged :side elevation of 'the stop .motion device shown in Figure 1*;

`Figure :3 is a plan view corresponding substantially with Figure 2.;

Figure 4 is a section taken on the line II-II vof Figure l; and

Figure 5 is an enlarged fragmentary 'view-showing Aa modied mounting Aarrangement vof the stop .motion device.

Referring at rst to .Figure '1 of the drawing, the disposition and arrangement of .a stop motion device of the present invention is shown in relation to a usual type of ring vspinning frameV using a filling or combination wind, indicated generally by the reference numeral I in which body structure 2, draft rail 3, ring rail 4, motor 5., :ring I, spindle 1, ring traveler 8. thread guide Sand roving I0 are shown.

The stop motion device of the present linvention comprises a mounting member II arranged on the draft rail 3, Yan elongated arm I2 pivotally arranged Ion the mounting member Il, and having a magnet l|-3 disposed on -one end and a mercury bulb switch I 4 arranged on the other end. The mercurybulb switch I4 comprises a bulb I d' and `a housing I4 enclosing a switch (not shown) which is connected in -circuit with a coil of the magnetic switch .(-not shown) of the motor 5 by, terminals I5 and I6.

The arm I2 is pivotally mounted on Va pin I1 of the mounting .member I.I so that the magnet I3 will be disposed for contacting relation with a bracket I8 which is Xedly arranged on the ring rail 4.

.As shown in Figure `2, an adjustable stop screw I9 'is arranged on the base of mounting member II, with lock nutI 2l! ibeing provided to set the stop screw I9 inthe proper position for separating the magnet I3 from the bracket 4I8 lwhen the ring rail d is stopped as hereinafter described.

As shown in Figure 4, the mounting member il is provided with a lslot 2l for receiving the bolt '22 and lock nut 22 so that the -mounting member I I lmay be adjusted vertically -on the `.irattfrail 3. .Figure5l illustrates a imodiiication in :arranging the mounting member 'Ill that .amounting bracket 23 is .provided `for use'wlie'n switch the member II requires horizontal adjustment. Bracket 23 has a slot 24 adapted to receive screw 25 so that such horizontal adjustment may be effected as desired. It will be understood that the need for such adjustment may be minimized or eliminated by varying the size of bracket I8.

The form and arrangement of the stop motion device are illustrated more vin detail in Figures 2 and 3-of thedrawing. As shown, the magnet I3 is detachably arranged on the arm I2 by the screw 26, and the mercury bulb switch I4 is similarly arranged on the other end of the arm I2 by the clipholder 21 and bolt and lock nut 28 and 29. The rest 30 disposed on the mounting member II retains the arm I2 in a normally oblique position when the stop motion device is inactive.

In the operation of the ring spinning frame I, the roving I passes through thread guides 9, through ring travelers 8 and then is wound on rotating spindles I with the spun yarn being built f onto bobbins on the spindles I.

rWhen this point is reached, and on the fourth stroke, as described above, the bracket I8 of the ring rail 4 comes in contact with the magnet I3 (asshownV in dotted lines in Figure 1), and as the downward stroke of the ring rail 4 is started, the magnet YI3 follows the bracket I8, pivoting the arm I2'on the pin I I (see Figure 2). This pivoting or tilting action causes the mercury in the mercury bulb. switch I4 to flow from the housing I4" to the bulb I4', and break the circuit Vleading lthrough'the terminals I5 and I6 to the coil in the magnetic switch (not shown) of the motor 5, which causesthe magnetic switch to trip and stop the motor 5.

As the operation of the spinning frame I ceases, and the ring rail 4`coasts to a stop, the arm I2 jcomes in contact with the adjustable stop screw I9, which parts theY magnet I3 from the bracket I 8 with the result thatthe contact being broken, the arm I2 falls back into its original position against the rest 30, and the mercury flows back to its original disposition in the mercury bulb I4. The return of the mercury to the switch end of the mercury bulb switch I 4 restores thercircuit and enables the magnet switch of the motor 5 torbe actuated.

It will be understood that the exact form of the mounting member II or of the bracket I8 are not important so long as they provide a means for mounting the arm I2 on the body structure of the frame I in a position to contact the ring rail at a predetermined point as discussed above. Also, the exact form of the magnet is not pertinent since an electro-magnet could be used in lieu of the permanent magnet which is shown and described herein.

It is believed that the advantages to be obtained in using a stop motion device embodying the features ofl the present invention will be y readily appreciated, namely, the simplicity of structure, the ease of installationand replacement of parts, and the exibility in adjusting the various parts to effect the automatic stopping of the ring rail at a predetermined point.

The present invention has been described in detail above for purposes of illustration only, and is not intended to be limited to `this description except as defined in the following claims.

I claim:

Y 1. lIn a spinning frame havingr a motor and a vertically reciprocating ring rail actuated for socalled lling or combination builds, a stop motion device comprising an elongated arm, a magnet disposed on one end of said arm, and a mercury bulb switch arranged on the other end of said arm and connected in circuit with the motor of said frame, said arm being pivotaly arranged on said spinning frame so that said magnet will contact the ring railwhen the bobbins are full, and said arm will be pivoted by the downward traverse of said ring rail whereby said circuit will be broken to stop the motor of said frame.

2. In a spinning frame having a motor anda vertically reciprocating ring rail actuated forsccalled filling or combination builds-a, stop motion device comprising mounting means, an elongated arm, a magnet disposed on one end of said arm, and a mercury bulb switch arranged on the other end of said arm and connected in circuit with the motor of said frame, said arm being pivotally arranged on said mounting means so that said magnet will contact the ring rail when the bobbins are full, and said arm will be pivoted by the downward traverse of said ring rail whereby Said circuit will be broken to stop the motor of said'frame, and adjustable means arranged on said mounting means for separating said magnet and said ring rail upon the stopping of said ring rail vso that said arm returns to its original position and said circuit is restored.

3In a spinning frame having a motor and a vertically reciprocating ring rail actuated for socalled filling or combination builds, the combination with means for building spun yarn onto bobbins, of a stop motion device comprising a bracket xedly attached to said ring rail, mounting means adjustably arranged on the body structure of said frame, an elongated arm pivotally arranged on said mounting means, a magnet disposed on one end of said arm and positioned to contact said bracket when the bobbins are full, a, mercury bulb switch arranged on the other end of said arm, saidswitch being connected in circuit with the motor of said frame and adapted for breaking said circuit whereby the traverse of the ring rail is stopped at a predetermined point.

4. In a spinning frame having a motor and a vertically reciprocating ring rail actuated for socalled filling or combination builds, the combination with means for building spun yarn onto bobbins, of a stop motion device comprising a bracket xedly attached to said ring rail, mounting means adjustably arranged on the body structure of said frame, an elongated arm pivotally arranged on said mounting means, a magnet disposed on one end of said arm and positioned to contact said bracket when the bobbins are full, a mercury bulb switch arranged on the other end of said arm, said switch being connected in circuit with the motor of said frame and adapted for breaking said circuit whereby the downward traverse of the ring rail is stopped approximately .one inch down from its highest point of traverse.

5. In a spinning frame having a motorand a vertically reciprocating. ring rail actuated 'for so- 1 called filling or combination builds, the. combina- 5 bobbns, of a stop motion device comprising a bracket xedly attached to said ring rail, mounting means adjustably arranged on the body structure of said frame, an elongated arm pivotally arranged on said mounting means, a magnet disposed on one end of said arm and positioned to contact said bracket when the bobbins are full, a mercury bulb switch arranged on the other end of said arm, said switch being connected in circuit with the motor of said frame and adapted for breaking said circuit whereby the downward traverse of the ring rail is stopped approximately one inch down from its highest point of traverse, and adjustable means for separating said magnet 6 Y and said bracket upon the stopping of the ring rail so that said arm returns to its original position and said circuit is restored.

JAMES E. SUMNER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,757,295 Davis May 6, 1930 2,074,059 Lewis et a1 Mar. 16, 1937 2,283,283 Overbey May 19, 1942 

